Liu, C.L. (Chung Laung), 1934-
McGraw-Hill, 1968
Buku Teks
Barnhart, Clarence L.
Random House, 1951
Buku Referensi
Wieringa, Edwin Paul, 1964-
University of Indonesia, Faculty of Humanities, 2019
Artikel Jurnal
The Australian National University, 1982
Buku Teks
Clarke, Irwin & Company Limited, 1959
Buku Teks SO